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Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
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Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
Anti-Breakage Fortifying Hair Serum - Genesis | L'Oréal Partner Shop
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Description

Genesis is the first dual action anti-fall haircare range: FOR ALL WOMEN, IN ALL LIFESTYLES, WITH ALL DEGREE OF HAIR FALL.
Powered with a cocktail of highly efficient ingredients to instantly strengthen and thicken the hair fiber for an immediate fuller look with more fiber strength, more fiber retention* and -84% less hair-fall**.

 

*Clinical study, 99 people, 6 weeks use.
**hair-fall due to breakage. Instrumental test on Bain Nutri-fortifiant + Masque Reconstituant + Ampoule/Sérum Aminexil.

 

HOW DOES GENESIS  WORK?
A double action for your client: 
Instantly: PROTECTS AGAINST DAILY EXTERNAL AGGRESSOR AND ANTIOXIDES thanks to Ginger roots and Edelweiss native cells.
Long Term: STOP HAIR-FALL FORTIFIES HAIR ANCHORAGE & RETENTION AND REDUCE HAIR-FALL FROM THE ROOTS thanks to Aminexil.

 

Sérum Anti-Chute Fortifiant benefits:
- Silicone-free.
- Strengthens hair day after day. 
- 97% less hair fall due to breakage from brushing*. 

*System of Bain Hydra-Fortifiant + Fondant Renforcateur + Sérum Fortifiant vs Non-Conditioning Shampoo.

 

WHO IS IT FOR? 
Genesis targets every woman with hair fall need that would efficient, convenient and peasurable with :
- Instant result of hair care
- Efficacy of anti hair fall solutions

How To Use

Activate scalp with the Serum Anti-Chute Fortifiant. 

Use once daily in the morning or before going to bed during a 6-week period :

Step 1: Take 1 pipette until the mark.
Step 2: Apply 3 drops by section and repeat on the whole scalp with 4 doses.
Step 3: Massage gently, do not rinse.

Learn more on Access

Ask more information about this product
Ingredients

Genesis Sérum Anti-Chute Fortifiant is enriched with GINGER ROOT,  EDELWEISS NATIVE CELLS and AMINEXIL.

GINGER ROOTS: Known for its ability to protect against daily external aggressors.

EDELWEISS NATIVE CELLS: Capable to resist the most extreme conditions and is known in skincare for its antioxidants. It also has power & collagen-preserving properties.

AMINEXIL: Helps hair to anchor more solidly into the scalp & prevents collagen from hardening around hair follicles to reduce hair-fall from the roots.

Rating & Reviews
1,351 reviews
5 stars
( 884.00)
4 stars
( 268.00)
3 stars
( 81.00)
2 stars
( 41.00)
1 star
( 77.00)
4
4.4 / 5 stars

Ella L

5

1.743050703E12 27/03/2025

Best product ever

[This review was collected as part of a promotion.] I simply love this product and cannot live without it anymore!

Originally posted on  kerastase-usa.com

AuroraM

5

1.743170408E12 28/03/2025

Amazing

This saved my hair after pregnancy. I was struggling with postpartum hair loss and used the set with the shampoo to try it out and had 0 hopes that it would work!! But it did an amazing job

Originally posted on  kerastase-usa.com

Sammyq

5

1.743076808E12 27/03/2025

Amazing!

Noticed a difference already!!! Will keep buying !

Originally posted on  kerastase-usa.com

Talidu

5

1.742760008E12 23/03/2025

Very refreshing

This was a gift for my mother, she love it! Every day using the product!

Originally posted on  kerastase-usa.com

Sayli b

5

1.742697906E12 22/03/2025

Best

Best hair growth serum in the world. It reduced my hairfall in 3 weeks of consistent use. I use it only twice a week

Originally posted on  kerastase-usa.com

Maria8678

5

1.742505309E12 20/03/2025

Excellent

I use it on daily basis. Makes my hair soft. Also it has reduced my hair breakage

Originally posted on  kerastase-usa.com

Anonymous

5

1.742594654E12 21/03/2025

Très bon produit

Très bon produit, mes cheveux ont cessé de tomber, ils sont rendu très hydratant et souple , c’est un miracle je suis rendu accro merci

Originally posted on  kerastase.ca

Eunika

5

1.742394608E12 19/03/2025

my favorite

I have bought this , but it is always out of stock, they have an issue on creating this product, I love the smell and I wish the out of stock would end!

Originally posted on  kerastase-usa.com

User45

5

1.742394608E12 19/03/2025

Best hair growth serum

Best serum! Works well on fine hair type. Worth for the price.

Originally posted on  kerastase-usa.com

Monisapphire

5

1.742393729E12 19/03/2025

Love it

Best product helps stop fallout feels refreshing on the scalp

Originally posted on  kerastase-usa.com

Clara Tran

5

1.74222631E12 17/03/2025

I love it so much

[This review was collected as part of a promotion.] “I’ve stopped using all other shampoos since I started using this one. My hair always smells great, and the serum helps my hair grow faster.

Originally posted on  kerastase-usa.com

Batia G

5

1.742335207E12 18/03/2025

Effective

[This review was collected as part of a promotion.] Used it after every wash for couple of weeks and helped with hair loss

Originally posted on  kerastase-usa.com

luners

5

1.742335207E12 18/03/2025

soo good!

I’ve been using this and notice that my hair has been much stronger. I’ve also noticed less fall out.

Originally posted on  kerastase-usa.com

Caroline22

3

1.742325394E12 18/03/2025

A voir.. si il y a des résultats

Je test le produit depuis seulement 1 semaine.. Mais pour le moment je peux dire qu'il graisse mes cheveux (j'ai les cheveux mixtes), et cela n'aide vraiment pas. De plus.. j'imagine la vitesse à laquelle le flacon va se vider.. Un flacon ne servira pas pour la cure de 6 semaines.

Originally posted on  kerastase.fr

Thehouseofariannis

5

1.74231361E12 18/03/2025

The best product

[This review was collected as part of a promotion.] The Kérastase Genesis Serum Fortifiant is a great investment for those experiencing hair fall due to breakage. With continued use, it visibly improves hair strength and scalp health. Ideal for anyone looking to fortify their hair and prevent excessive shedding.

Originally posted on  kerastase-usa.com

AdrianaC27

5

1.742267706E12 17/03/2025

Hair is so soft and full!!

This serum is so delicious the smell alone is so good and it leaves your hair feeling full yet soft and healthy all that the same time!

Originally posted on  kerastase-usa.com

Longasshair

2

1.742324671E12 18/03/2025

not worth the price or wait

If you can’t keep it stocked there’s no point. I love this product but the issue is that it constantly sells out, and they charge sooo much for such a small amount. I am currently looking for an alternative as there are many different ones available. I love a brand that recognizes a need and fulfills it, it just feels like this company takes advantage. I like consistency and this brand fails at that.

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hello there, thank you for reaching out about Serum Fortifiant Hair Serum. Please know we truly value your honest feedback and all these comments will be shared with the appropriate team for consideration.

StephC628

5

1.742219112E12 17/03/2025

The holy grail for scalp serum

My hair has always been on the thinner side, but even more so post partum. This helps save my hair and doesn't leave behind any grease or residue.

Originally posted on  kerastase-usa.com

S Renee

5

1.742049912E12 15/03/2025

Amazing hair serum

[This review was collected as part of a promotion.] I started using this a couple of years ago. It is amazing and it does work. I continue using it for maintenance now. You definitely need to try this if you have thinning hair

Originally posted on  kerastase-usa.com

B from IA

5

1.742219112E12 17/03/2025

Seems to be working

I really like this product, I can see new growth and can see it's working.

Originally posted on  kerastase-usa.com

Avery Singer

5

1.741742105E12 11/03/2025

Great product

[This review was collected as part of a promotion.] So so good! Love this product. Have bought it multiple times

Originally posted on  kerastase-usa.com

Tabatha

5

1.741647608E12 10/03/2025

Hair Saver!

Before using this serum, I lost tons of hair every time I touched it. Brushing, washing, or styling always left me with handfuls of fall out. I noticed a difference in my hair after the first two weeks of using this product and now I'm on bottle number three and use it three times a week instead of everything. The last time I washed my hair, I lost a strand. ONE STRAND. It was amazing.

Originally posted on  kerastase-usa.com

Angela Hayward

5

1.741708818E12 11/03/2025

Won’t live without this

Life changing .. Will never go without this product ! Smell is the most amazing ever

Originally posted on  kerastase-usa.com

Alexis1235

5

1.741708818E12 11/03/2025

Very nice

[This review was collected as part of a promotion.] This product doesn’t make my hair feel greasy. My hair is softer after using it

Originally posted on  kerastase-usa.com

JohannaCS

5

1.741708817E12 11/03/2025

Amazing serum

Light weight, non greasy and hair loss has improved significantly

Originally posted on  kerastase-usa.com

Mia Girl

5

1.741708817E12 11/03/2025

My hair was so damaged

My hair was severely damaged due to over bleaching, and this product has really brought it back to normal soft, not breaking and repairing my hair

Originally posted on  kerastase-usa.com

Anna Ss

2

1.741709916E12 11/03/2025

Overpowering smell, I’m not sure it’s doing much

[This review was collected as part of a promotion.] Easy to put on but the smell is too strong and I haven’t noticed much of a change within a month. Plus the product is done within a month so it’s a bit too pricey to keep using.

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hello Anna, Thanks for giving our Serum Fortifiant Hair Serum a try. We are sorry that you did not get the result that you expected. Consumer feedback like yours is extremely helpful, as it allows us the opportunity to improve our products and services. All these comments will be shared with the appropriate teams.

Eli Cajiao

5

1.741619713E12 10/03/2025

Great product

My hair feels so soft. I recommend! You won't regret!

Originally posted on  kerastase-usa.com

Caaaaa

5

1.741573805E12 09/03/2025

Great serum

The serum has really helped with hair breakage for someone who is in their early 50s due to hormones and coloring my hair for decades. It makes your hair very shiny and smooth as well. The smell is a bit potent and is quite floral however, if you like that, then that’s a plus

Originally posted on  kerastase-usa.com

Anonymous

5

1.741313708E12 06/03/2025

Great hair serum

I love this product it has helped my hair tremendously

Originally posted on  kerastase-usa.com

Mrs hair

5

1.741448713E12 08/03/2025

Not hreasy

[This review was collected as part of a promotion.] Love the smell of this product, doesn’t leave a greasy residue.

Originally posted on  kerastase-usa.com

Adri scm

4

1.74127141E12 06/03/2025

Smells so good!

Worth it. I am trying it for the first month and it seems that it will work

Originally posted on  kerastase-usa.com

Lexip1234

5

1.741247109E12 06/03/2025

My favorite ever

I’ve used this for years! Despite the price, I’ll never stop!

Originally posted on  kerastase-usa.com

rashi1

4

1.741219215E12 05/03/2025

Will repurchase!

I have only been using this for 1 month, but I can see a difference in my hair! It is best to apply before bed.

Originally posted on  kerastase-usa.com

Poppadop

5

1.741387511E12 07/03/2025

New Baby Hairs after one month!

[This review was collected as part of a promotion.] My daughter loves the hair serum. We purchased it to see if it would help with some hair loss she was experiencing and within a month of using it she's already seeing new little hairs around her hairline coming in. She's thrilled and has signed up for this to be a repeat order.

Originally posted on  kerastase-usa.com

Mari9

5

1.741365486E12 07/03/2025

Love this product!

I definitely recommend this product and anything Kerastase! I did feel the tingling sensation a few times but this is my third bottle and I no longer get that feeling but most importantly my hair loss has significantly improved! Barely any at all

Originally posted on  kerastase.ca

Michma

5

1.741095913E12 04/03/2025

Serum Review

I have used this prodcut consistently for a few weeks and my fallout is noticeably lower. I also love the scent of this product

Originally posted on  kerastase-usa.com

Laci0876

5

1.741292111E12 06/03/2025

The proof is in the pudding…

This stuff works wonders. Very expensive in my opinion and will run out fast if using the recommended doses, BUT I have seen incredible results from using for about 2/3 weeks steady. I started pulling clumps out of my hair showering, or bruising and shedding all over my clothes daily, but this has almost completely stopped using this. Does not make my hair oily at all. Would recommend

Originally posted on  kerastase-usa.com

LizATL

5

1.741035608E12 03/03/2025

My best friend

This is amazing and I run to buy it again when my bottle is nearing the end. It definitely reduces hair fall.

Originally posted on  kerastase-usa.com

Anonymous

5

1.741184112E12 05/03/2025

Smells Amazing

Still using for growth but i love this stuff… time will tell

Originally posted on  kerastase-usa.com

Sara H in WI

5

1.740958207E12 02/03/2025

Magic in a bottle

This stuff is like magic! I’ve been using it steadily for about a month now and can definitely tell a difference. My hair feels a little thicker, less fallout in the shower, and much softer! Best part? It doesn’t make my hair feel greasy or heavy!!

Originally posted on  kerastase-usa.com

Maisie

5

1.741177812E12 05/03/2025

Love the Hair Serum!

I truly notice a difference in the strength of my hair when using this serum and I have a lot less hair loss and breakage. Would highly recommend and definitely worth the price!!

Originally posted on  kerastase-usa.com

Scarlin

5

1.740847509E12 01/03/2025

My hair don’t fall any more

[This review was collected as part of a promotion.] Great product make my hair so shine and soft I would buy it again

Originally posted on  kerastase-usa.com

emarie2025

5

1.74069811E12 27/02/2025

Miracle Product

It has helped my hair so much. I've really noticed a difference in the amount of fall out and my hair just feels and looks healthier. Smells nice but strong but I like it.

Originally posted on  kerastase-usa.com

Kim Chasar

5

1.740668414E12 27/02/2025

Forever serum

[This review was collected as part of a promotion.] This serum has changed everything for my hair! Worth every penny

Originally posted on  kerastase-usa.com

Noor ahmed

5

1.740564909E12 26/02/2025

100/100

I love it my favorite this my second bottle. Less shedding. Recommend

Originally posted on  kerastase-usa.com

Seniami

5

1.740525306E12 25/02/2025

Hair Serum

[This review was collected as part of a promotion.] This is first time that I bought it and never disappointed. This is second serum that I using everyday and smell good.

Originally posted on  kerastase-usa.com

Khayat

5

1.741575897E12 09/03/2025

Very good i like it Very good i like it

[This review was collected as part of a promotion.] Very good i like it Very good i like it Very good i like it Very good i like it

Originally posted on  kerastase-usa.com

Laurel M

5

1.740676508E12 27/02/2025

I was skeptical….

I was skeptical only because anytime I put a serum on my scalp it feels like I need to was my hair!! It grosses me out. Not this product. It’s light and refreshing and feels like a cool clean vitamin scalp shower!!! Love this product!!!

Originally posted on  kerastase-usa.com

Shaylie

5

1.7408704E12 01/03/2025

GAME CHANGER!!

I started using this serum over a month ago and I have noticed such a difference in the texture of my hair. It’s softer and it flows! It doesn’t make my hair feel heavy or my scalp feel heavy! It’s a game changer for hair growth and overall health!

Originally posted on  kerastase-usa.com

Danimcarr

5

1.74042091E12 24/02/2025

Really works

Hair shed has been reduced to nearly nothing! Such an amazing product

Originally posted on  kerastase-usa.com

AllieCat2

5

1.740373206E12 24/02/2025

This stuff is AMAZING!

My hairstylist used this on my hair after a visit and I fell in love with this serum. It really does the job of strengthening the roots. It smells amazing too! Clearly it is amazing as it flies off of the salon shelf and the website, as it is frequently sold out.

Originally posted on  kerastase-usa.com

Maryel

5

1.740521352E12 25/02/2025

Perfecto

De las mejores inversiones que pude hacer en mi cabello. Me encanta como ha controlado la caída y me ha crecido nuevo cabello. Tengo hipotiroidismo y resistencia a la insulina por lo que tener un cabello sano ha sido complicado. Este producto me ha ayudado incluso con mi cabello decolorado. Me encantó el peoducto

Originally posted on  kerastase-usa.com

Olivia Michele

5

1.740445209E12 24/02/2025

Incredible results!

Incredible! Have been using for a few weeks and my hair appears stronger and less breakage.

Originally posted on  kerastase-usa.com

Ashleyc8777

5

1.740445209E12 24/02/2025

Really good!

[This review was collected as part of a promotion.] I could notice a difference very quickly. It goes on very wet but then dries and kind of gives me volume.

Originally posted on  kerastase-usa.com

Belmis

5

1.740249909E12 22/02/2025

Excellent

[This review was collected as part of a promotion.] I have noticed less hair loss when washing my hair and it does not leave my hair sticky when I apply it.

Originally posted on  kerastase-usa.com

maiamm

5

1.740240919E12 22/02/2025

BUY!!

[This review was collected as part of a promotion.] Already have bought my second bottle. So much less hair fall out.

Originally posted on  kerastase-usa.com

Alejavalepin

5

1.740240007E12 22/02/2025

Es espectacular

[This review was collected as part of a promotion.] Yo vivo fascinada con estos productos y este, aunque solo lo he utilizado una vez ha sido maravilloso. Mil recomendado

Originally posted on  kerastase-usa.com

Ally25

5

1.740406535E12 24/02/2025

5 Stars

The best!!!! Can not rave about this serum enough!

Originally posted on  kerastase-usa.com

Bhavchari

5

1.740405613E12 24/02/2025

The best product

Hands down, the best hair serum ever. I wish it came in a bigger bottle, I can't stop using it, love the smell of it too!

Originally posted on  kerastase-usa.com

Twilight

5

1.740406535E12 24/02/2025

Love the scent

I recently just bought this because I saw it all over my fyp on TikTok and so far I really enjoy it. The smell is pretty strong but it’s a tolerable scent, I can’t really give a proper review yet saying it works since I just started using it but I will say I did notice my hair falling less.

Originally posted on  kerastase-usa.com

Zee Kurtbedin

5

1.740405613E12 24/02/2025

It works for me.

My friend recommend me to get it. I’ve started having so much hair fall out and was getting worried. I’ve ordered fortfiant serum and started using it daily at night for 2 weeks now along with vitamin E and hair oiling and definitely seeing results. My hair got stronger and shedding went down to normal not bunch of it like it use too.

Originally posted on  kerastase-usa.com

cherrypiec

3

1.740520372E12 25/02/2025

we will see

I will update my review once I've used for six weeks. I have high hopes because I love this line. downside is it REEKS like after shave

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hello Cherrypiec, We appreciate your honest feedback on Serum Fortifiant Hair Serum. We are sorry to hear you dislike the fragrance. We are always looking for ways to improve our products and services. Your feedback will be passed along to others in our company for consideration.

Star Butterfly

5

1.740229214E12 22/02/2025

Works! But runs out quick

[This review was collected as part of a promotion.] I really love this serum! It works and is effective, I just ran out of it so quick! I used it with the directions of everyday, but I recommend using it every wash day to make the bottle last longer! It also smells amazing and I can smell it throughout the day! Not too strong but fragrant and it doesn’t leave your hair oily!

Originally posted on  kerastase-usa.com

alex23

4

1.740182405E12 21/02/2025

First impression

I’ve been using for only 2 weeks but I really like the serum. It smells nice, feels very soothing in the scalp, and doesn’t leave a greasy finish which is a huge plus because my hair is very fine and oily. I haven’t seen any major results yet since I started using it only recently but so far I like it.

Originally posted on  kerastase-usa.com

SickaSicko

5

1.740171607E12 21/02/2025

Holy grail

This serum is amazing! It makes my hair soft and my hair doesn’t fall out anymore. Their products are all that I use. I’ve notice major hair growth.

Originally posted on  kerastase-usa.com

LauBrnst

5

1.740090605E12 20/02/2025

Excellent product

I’ve been using this product for a month, and you can definitely see the difference with new baby hairs. Plus, the smell is amazing.

Originally posted on  kerastase-usa.com

Carllycar

5

1.739887218E12 18/02/2025

Genesis in a bottle

My biggest concern is how much I shred! I shred hairballs of hair everytime I brush my hair and finally made the investment to purchase this bottle! It has significantly strengthened my hair to reduce my hair balls into more subtle strands of hair!

Originally posted on  kerastase-usa.com

Sab95

5

1.739859325E12 18/02/2025

Simple et efficace !

J’ai acheté ce produit suite à une perte de cheveux dû à la saison, l’utilisation est récente mais je vois déjà que je perds moins de cheveux. Le produit ne rend pas le cheveux gras, s’absorbe rapidement et laisse une odeur très agréable.

Originally posted on  kerastase.fr

Anonymous

5

1.740053713E12 20/02/2025

Worth the investment

My hair is stronger and softer after only a few weeks.

Originally posted on  kerastase-usa.com

Em2525

5

1.739853907E12 17/02/2025

Amazing product

[This review was collected as part of a promotion.] I have used this product for over a year now and have repurchased several times. I can’t imagine this product not being part of my hair routine. I can tell such a difference in the way my hair looks and feels. 10/10

Originally posted on  kerastase-usa.com

Fran W

5

1.739850307E12 17/02/2025

Stops breakage!

This has changes my hair in only 2 weeks! I have serious breakage from years of bleaching. Every time I brushed my hair it was snapping off. I have noticed that my hair is not breaking off! I use I dropper filled to the line every night and it leaves no residue. You can use on dry or damp hair. The smell is a little strong but fades by morning time. Will definitely be repurchasing and using consistently on my hair health journey!

Originally posted on  kerastase-usa.com

Stephtones

5

1.740018607E12 19/02/2025

Best hair serum

I was having a lot hair loss and this serum helped me to bring back my hair to life. Now I can’t live without

Originally posted on  kerastase-usa.com

Marianna Araujo

5

1.739850307E12 17/02/2025

“Game-Changer for Soft, Healthy Hair!”

I’ve been using this hair product for two weeks, and the difference is amazing! My hair feels incredibly soft, looks healthier, and has a noticeable shine. It’s lightweight, smells great, and doesn’t leave any greasy residue. Definitely a must-have for anyone looking to improve their hair’s texture and strength!

Originally posted on  kerastase-usa.com

Molly K

5

1.739837705E12 17/02/2025

A new staple

Love this serum. Feels great, smells great, and seems to be really working. Already repurchased

Originally posted on  kerastase-usa.com

Imogen

4

1.740010508E12 19/02/2025

Did indeed stop my breakage

I ordered this as I saw a lot of positive content about it online. I had really bad breakage and fall out. I read the instructions, it didn’t really say how much to use, it just said to apply it to the scalp once a day. When I opened the bottle, I saw the dropper had a line on it, indicating almost like, a “serving” amount, however - how many was I supposed to put on my scalp each time? I did see that this product was supposed to be used over a 6 week period, so it’s supposed to last a while. I started out using wayyy too much product, and went through like, 1/3 of my bottle in my first week of having it. I recommend using 1 dropper (product up to the line) per day if it is to last you the full 6 weeks. That said, the product did what it promises! My brittle, lifeless, frizzy, fried hair became so much softer, and the fall out decreased dramatically like, overnight. My hair is doing a lot better now. I did get the 8hr Magic Night Serum with it, and these two products have helped my hair tremendously.

Originally posted on  kerastase-usa.com

D in Irvine

4

1.739974535E12 19/02/2025

Almost Perfect

[This review was collected as part of a promotion.] The smell of this product is amazing I feel like it makes your hair feel nice but I also feel there is an alcohol element that is also very drying.

Originally posted on  kerastase-usa.com

Evy123

5

1.73991871E12 18/02/2025

My hair stop falling and feels thicker :)

Best product ever will continue buying , my hair feels stronger

Originally posted on  kerastase-usa.com

Cam cam

5

1.739731511E12 16/02/2025

Product works

I noticed less fall out in my hair when brushing it

Originally posted on  kerastase-usa.com

Tanjum

5

1.739730617E12 16/02/2025

Absolutely magic

I need this product in subscription. I hate how it’s been sold out😭😭😭 Bring it back but please don’t mess with the formula, which is literally my biggest fear.

Originally posted on  kerastase-usa.com

Anna05

3

1.739912551E12 18/02/2025

So so

My friend recommended this product to me, so I decided to try it. However, it didn’t really make a difference for me. I used it for a while and finished two bottles to give it enough time to work. It has a nice fragrance and makes your hair look good, but it didn’t solve my hair breakage and hair fall issues.

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hi Anna05, We appreciate your comments about our Serum Fortifiant Hair Serum. We are sorry to hear that it did not fully meet your expectations. As consumers ourselves, we do understand how disappointing that can be. We will be passing your comments along. Thanks for giving it a try!

Ana Riv

5

1.739715315E12 16/02/2025

Best hair care

Love this for my hair. Made such a difference. Recommend

Originally posted on  kerastase-usa.com

Jenn Cman

5

1.739758505E12 16/02/2025

Best ever

Absolutely love this serum, definitely have seen improvement!

Originally posted on  kerastase-usa.com

Lisa 26

1

1.739917392E12 18/02/2025

Did not work...

I purchaed this to help srengthn my hair that had breakage and it did not work. On the contrary - my hair starting falling out and breaking even more.

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hello Lisa 26, We are sorry to hear about the experience you had with Serum Fortifiant Hair Serum. We want to speak with you directly about it. Please give us a call at 877-748-8357 M-F 9:00 am – 5:00 pm ET for assistance and provide reference 39806776.

Mparikh

5

1.739739611E12 16/02/2025

Parikh

[This review was collected as part of a promotion.] Absolutely love this hair serum! It tames my frizz, adds shine, and makes my hair feel silky smooth. Definitely must have.

Originally posted on  kerastase-usa.com

Anonymous

5

1.739729711E12 16/02/2025

Great Hair Serum

[This review was collected as part of a promotion.] Non greasy & great serum. Hope to see results in coming weeks

Originally posted on  kerastase-usa.com

Wendy9893

3

1.739550084E12 14/02/2025

Dont really notify any changes

[This review was collected as part of a promotion.] I almost finish a whole bottle and don't really notify any changes, not improving not getting worse so I'm not sure how it really works

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

Hi there! Thank you for reaching out about our Serum Fortifiant Hair Serum. We appreciate you finishing a whole bottle and sharing that you didn't notice any significant changes, either positive or negative. It's helpful to know that you're unsure how the product worked for you. We value your opinion!

Maricel25

4

1.739520911E12 14/02/2025

Still trying it out

[This review was collected as part of a promotion.] So far I'm really happy with my results, this is my second bottle and already can see some new hairs growing, will keep using it consistently and hopefully will give me more results as I've been struggling with hair loss since my teen years.

Originally posted on  kerastase-usa.com

Anonymous

5

1.74004561E12 20/02/2025

Perfect for hair growth

Highly recommended for who have problem that hair lose that’s work really good you will see the results after 2 week and this is my 4bottle I hair grow a lot. I used it 4-5time a week after I wash my hair apply on the spot that your hair lose and messages 1mn when hair wet or dry the smell so amazing make you feel fresh. I love it. Perfect for who want hair grow and thick hair.

Originally posted on  kerastase-usa.com

Laaaay

5

1.739679304E12 15/02/2025

Nice smell and big

[This review was collected as part of a promotion.] I was looking for something that would help me with my hair cause I lost so much hair

Originally posted on  kerastase-usa.com

Kels0203

5

1.739544313E12 14/02/2025

Great for scalp

I don’t mind the fragrance but ever since I started using this, I noticed that there is lesser hairfall when I brush my hair or take a shower. I’ve been using it for 3 months now..

Originally posted on  kerastase-usa.com

Kiamali

5

1.739379612E12 12/02/2025

The best product I have ever used

[This review was collected as part of a promotion.] In the first pose my hair stopped falling out , I loved

Originally posted on  kerastase-usa.com

mysticmissouri

2

1.739674805E12 15/02/2025

OVERHYPED

[This review was collected as part of a promotion.] TikTok made me buy it. I really wanted to like it—this is my second bottle. I’ve been using it as recommended, but I haven’t seen any benefits. On top of that, it caused breakouts on my scalp.

Originally posted on  kerastase-usa.com

Reply from Consumer Care Center

We are sorry to hear about the experience you had with Serum Fortifiant Hair Serum. We would like to speak with you directly about it. Please give us a call @877-254-9949 M-F 9:00 am – 5:30 pm ET for assistance and provide the reference # 39762868. Looking forward to speaking with you. It would be helpful if you could have the product available when you call.

Myma

2

1.739361653E12 12/02/2025

Déçue, je me tourne vers ce produit sujette à une perte de cheveux liée à l'âge. J'ai le cheveu frisé et je constate malheureusement dans un premier temps que ce sérum me rend les cheveux très secs donc à terme je doute de son efficacité, je pense même arrêter le traitement avant la fin du traitement. Je mets 2 étoiles pour son odeur, sa texture et qu'il est possible qu'il fonctionne sur d'autres natures de cheveux et que Kérastase reste logiquement une bonne marque, je vais cependant rester sur une huile moins onéreuse.

Originally posted on  kerastase.fr

RachDB

5

1.739338209E12 12/02/2025

Amazing Product

I bought this product after reading reviews and feedback from others. I am impressed with the results. I am not surprised this product sells out. As described, it has reduced my hair shedding, in just a few weeks. I love the smell and results. This is a must have product for me moving forward.

Originally posted on  kerastase-usa.com

mayra1990

5

1.739300408E12 11/02/2025

I like how this feels on my scalp

[This review was collected as part of a promotion.] Not sure yet if it’s working but I love how it feels on my scalp .

Originally posted on  kerastase-usa.com

Vilma25

5

1.739291414E12 11/02/2025

great product

[This review was collected as part of a promotion.] Strengthens roots and reduces hair fall over time. Excellent product

Originally posted on  kerastase-usa.com

Maferardon13

5

1.739331909E12 11/02/2025

Love it

[This review was collected as part of a promotion.] Love it, seen different after 2 weeks of using it !

Originally posted on  kerastase-usa.com

IAIAIA

5

1.739228405E12 10/02/2025

Great product

My hair isn’t falling out as much. And it smells amazing!

Originally posted on  kerastase-usa.com

Helenmukhina

5

1.739301315E12 11/02/2025

Amazing serum - shiny ✨ hair and amazing scents ✨

I tried this serum for the first time - I felt in love! It’s smells like very expensive perfume And the quality of hair is so amazing after using it! I really recommend it!

Originally posted on  kerastase-usa.com

    Anti-Breakage Fortifying Hair Serum 90ml

    Kerastase - Genesis

    Product code : 3474636858002

     

     

    Daily anti hair-fall fortifying serum for weakened hair, prone to falling. The serum improves hair resistance to minimize hair-fall and maximize beautiful hair.

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